1. The author of the novel 'Half of a Yellow Sun' is Chimamanda Ngozi Adichie. 2. The author of the novel 'Middlesex' is Jeffrey Eugenides. 3. The author of the novel 'Missile Gap' is China Mieville.
During Pleistocene epoch, four glacial phases were identified. Which one of the following is the correct chronological order in which they appeared during this epoch from early times?